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Source: Coe, Brian (1978): Colour Photography. The First Hundred Years 1840-1940. London: Ash & Grant.
- Source: Lavédrine, Bertrand (2009): Photographs of the Past. Process and Preservation. Los Angeles: Getty Publications.
- Source: Coote, Jack H. (1993): The Illustrated History of Colour Photography. Surbiton, Surrey: Fountain Press.
- Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 19.
- Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 235.